Radial drill



W. W. EDWARDS Sept. 18, 1928.

RADIAL DRILL Filed Jan. 22, 1923 mvsu'ron:

wsuum wenwnnns ATTORNEY Patented Sept. 18, 1928.

UNITED Asiwiias PATENT oFFicE.;

WILLIAM W; EDWARDS; 0F LOS ANGELES, CALIFORNIA.

,RADIAL DRILL.

Application filed. January 22, 1923. Serial No. 614,111.

simple construction and adapted to be ieadvily assembled or dismantled,and in .which the wearing parts may be readily lubricated and be easilyremoved and ieplaced in event of excessive wear. f

lVth the foregoing objects in view together withsuch other objects asmay subsequently appear, my linvention resides in the parts and in theconstruction, combination and arrangement of parts hereinafter describedand claimed and illustrated in the accompanyingdrawings, in which Fig. 1is a view in horizontal section of the device as seen on the line 1-1 ofFig. 2;.

Figure 2 is a View in section and elevation as seen on the line 2-2 ofFigure 1 on a reduced scale. f

Referring to the 4drawings more specifically, 45 indicates a guideway onone side of which is a revoluble drive shaft 48 supported in suitablebearings. A carriage 2O is mounted to slide longitudinally on theguideway 45 and the shaft 48, which carriage and its allied partsconstitute an important feature of the machine, and will therefore benow described in detail.

rlhe carriage embodies a back wall portion mounted to slide on. theguideway 45l there being a dovetail sliding engagement between the upperand lower edges of the guidewav 45 and the back wall 60 of the carriage,as indicated at 61 and 62 in Figure 2. Mounted on the front of the backwall portion 60 is a housing embodying a pair of side walls 65 and 66having inner end faces l and e which abut against the face 0 of the backwall and are secured thereto by suitable fastenings. The side wallportions 65 and 66 are connected together adjacent their lower ends by atransverse wall 7 0 which abuts against the wall c on the back wallmember 60, the upper and lower edges of the wall portion 7 extendingflush with the upper and lower edges of the back wall 60, asparticularly shown in Figure 2. .The adjacent faces of the walls 60 and70 are formed to receive a bearing 71 through which a vertical revolubleshaft-.72 extends, as will be later described. lhe vlower portions ofthe side walls 65 and 66 extend adjacent' the horizontal revolublc shaft48 and are formed to receive a bearing 7 6 through which the shaft 48extends, as will bel later described.

The bearing 76l includes a pair of bushings l( and 78 which are mountedin recesses 7 9 and 8O in the front end walls of the side walls G5 landG6 which bushings are held in place by a cap plate 81, particularlyshown in Figure 2. Turnablein the bushings 7 7 and 78 is a sleeve 82 theends of which project beyond the outer-ends of the bushings and areexteiiially threaded. The sleeve encompasses the shaft 48 and is splinedon the latter by means of a key 88 which slidably extends in a leyway84'for1ned longitudinally ofthe shaft 48; the key being fastenedrelative to thesleeve by means of an internally threaded ring 85 whichis screwed on the end of the sleeve 82 and engages threads 86 on an inturned end formed on the key 83, asshown in Figure 1. An internallythreadediring 85 is screwed on the end of the sleeve 82 and cooperateswith the ring 85 inholding the sleeve 82 against longitudinal movementin the bushing. By this construction, rotation of the shaft 48 willeffect rotation of the sleeve 82, yet permitmovement of the sleevelongitudinally of the shaft. Formed on the sleeve 82 is a helical gear87 which meshes with a worm 88 on a sleeve 89 encircling the shaft 7 2;the sleeve being splined on the shaft 72 by a keyr90 slidably mounted ina keyway 91 formed longitudinally of the shaft 72. The sleeve 89 extendsthrough bushings 92 and 93 carried between the walls Y6() and 70 and hasexternally threaded ends projecting y shaft relative to the sleeve.

When the bushings 82 and 89 are assembled as just described, with thecap 81 extending over the gear 87, the 87 and 88 will be completelyhoused. within chamber 96,

which chamber is designed to contain suitable lubricant, which, becauseof the `sleeves extending through the bushings,` `will not contact theshafts 48 and 72, and therefore cannot escape from the lubricantchan'rberv 96 through the keyways 84 and 91. This constitutes theimportant Vfeature ofmy ilvenz tion.

AWhile I have shown and described the specific embodiment of myinvention, I do not limit myself to the exact details of constructionand arrangement shown, but may employ such modifications and changes ascome within the scope of the appended claims. I claims Y i 1. Anenclosed lubricating chamber, a. ro-

tary shaftl mounted for longitudinal movel of thechamber adjacentftheouter ends ofY are sleeve for inhibit@ t uw longitudinal mdvement ofsaid sleeve fe ative to said chamber, `and a gear Von said sleeve meshedwith i the first named gear,

2. An enclosed housing forming a lubri-A cant chamber, a driven shaftextending through said chamber, a sleeve splined on said shaft andextending through the Walls of said chamber, a gear wheel onsaid sleeve,a second'sleeve extending through said chamber, e gear en said` secondsleeve meshing with the rst named geur, and a drive shaftextendingthreugh said second sleeve on which said sleeve ie spined,whereby on rotav tion of said drive `shaft said sleeve may be rotatedthrough the virrtermedary of' said gears to eiect rotation of saiddrivenshait.`

3. In a Amachine of the class described, a

power driven shaft, a1 sleeved `gear Wheel` splhed to saidV powerdrivenrshafaa shaft disposed at ri ght: angles to said power drivenshafta sleeved gear wheel splined to the last named shaft, a chamberenclosing both of said sleeved gear Wheels and provided l" with a pairof bearings for each sleeve of each gear Wheel whereby said chamber andthe sleeves of vsaid gears provide a lubricant contaner and whereby saidchamber may be shafts. f

:WILLIAM W. EDWARDS;

moved ywith relation to both of'said shafts f 'without `leakage betweenthe chamber and

